package com.atguigu.gulimallcart.controller;

import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.constant.CartConstant;
import com.atguigu.gulimallcart.interceptor.CartInterceptor;
import com.atguigu.gulimallcart.service.CartService;
import com.atguigu.gulimallcart.vo.Cart;
import com.atguigu.gulimallcart.vo.CartItem;
import com.atguigu.gulimallcart.vo.UserInfoTo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import java.util.List;
import java.util.concurrent.ExecutionException;

@Controller
public class CartController {
    /**
     * 通过京东发现，浏览器有一个cookier:user_key;标识用户身份，一个月后过期
     * 如果第一次使用JD的购物车功能，都会给一个临时的用户身份，
     * 浏览器以后保存，每次访问都会带上这个cookie
     * 登录：session有
     * 没有登录，按照cookie里面带来的user-key来做。
     * 第一次，如果没有临时用户，需创建一个临时用户。
     *
     * @param
     * @return
     */
    @Autowired
    private CartService cartService;
    @ResponseBody
    @PostMapping("/currentUserCartItems")
    public List<CartItem> getCurrentUserCartItems() {
        return cartService.getCurrentUserCartItems();
    }


    @GetMapping("/countItem")
    public String countItem(@RequestParam("skuId") Long skuId, @RequestParam("num") Integer num) {

        cartService.countItem(skuId, num);

        return "redirect:http://cart.gulimall.com/cart.html";
    }

    @GetMapping("/checkItem")
    public String checkItem(@RequestParam("skuId") Long skuId, @RequestParam("check") Integer check) {

        cartService.checkItem(skuId, check);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    @GetMapping("/checkAllItem")
    public String checkAllItem(@RequestParam("check") Integer check) throws ExecutionException, InterruptedException {

        cartService.checkAllItem(check);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    @GetMapping("/deleteItem")
    public String deleteItem(@RequestParam("skuId") Long skuId) {

        cartService.deleteItem(skuId);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    @GetMapping("/deleteCheckedItem")
    public String deleteCheckedItem() throws ExecutionException, InterruptedException {

        cartService.deleteCheckedItem();
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    @GetMapping("/cart.html")
    public String cartListPage(Model model, HttpSession httpSession) throws ExecutionException, InterruptedException {

        Cart cart = cartService.getCart();
        //数据返回前端 视图
        model.addAttribute("cart", cart);
        httpSession.setAttribute(CartConstant.CURRENT_CART, cart.getCountType());

        return "cartList";
    }

    /**
     * 添加商品到购物车
     * ra.addAttribute("skuId",skuId)将skuId拼接在后面。http://cart.gulimall.com/addToCartSuccess.html?skuId=13
     *
     * @return
     */
    @GetMapping("/addToCart")
    public String addToCart(@RequestParam("skuId") Long skuId,
                            @RequestParam("num") Integer num,
                            RedirectAttributes ra
    ) throws ExecutionException, InterruptedException {
        cartService.addToCart(skuId, num);
//        model.addAttribute("cartItem", cartItem);
//        model.addAttribute("skuId",skuId);
        ra.addAttribute("skuId", skuId);
        return "redirect:http://cart.gulimall.com/addToCartSuccess.html";
    }

    @GetMapping("/addToCartSuccess.html")
    public String addToCartSuccessPage(@RequestParam("skuId") Long skuId, Model model) {
        //重定向成功页面，再次查询购物车数据库即可。
        CartItem cartItem = cartService.getCartItem(skuId);
        model.addAttribute("cartItem", cartItem);

        return "success";
    }


}
